Siemens SWT-3000 - Signal Output from the IFC-D;P Module

SWT 3000 Equipment Manual Interface Modules
© SIEMENS AG 2008 Edition p3_3_2x 08/09 Page - 9
Signal output from the IFC-D/P module
Commands from the distant station are output through relays K1...K4 in the case of module IFC-D
and relays K13...K16 in the case of module IFC-P. Compared with module IFC-P the relays of
module IFC-D are slower but they can switch more power. With module IFC-D power circuit break-
ers can be operated directly.
GND
P12_R
K1/K13
GND
K2/K14
GND
K3/K15
GND
K4/K16
D4
D0
D1
D5
D2
D6
D3
D7
K1 - K4 Output relays of module IFC-D
K13 - K16 Output relays of module IFC-P
D0 - D7 Operation of the IFCx controller
Figure 9: Block diagram of the output circuit of IFC-D/P
The following security systems are incorporated for sending commands without interference:
 The power supply voltage P12_R must be enabled by the PU3 .
 The relays are operated on a two-pole basis